I haven't really ever worked in a company where they used straight waterfall in practice; it has usually been design and documentation up front with the main aspects discovered, followed by coding and updating some or all of the documents as you go in an itertive sort of manner re-designing as you go. Typically, the documents updated were screen shots and data formats. You can't call that agile perhpas, but I don't think you can call it waterfall, either.